Removal of Cd(II) and Pb(II) from aqueous solution using dried water hyacinth as a biosorbent

被引：120

作者：

Ibrahim, Hanan S. ^{[3
]}

Ammar, Nabila S. ^{[3
]}

Soylak, Mustafa ^{[2
]}

Ibrahim, Medhat ^{[1
]}

机构：

[1] Natl Res Ctr, Dept Spect, Cairo, Egypt

[2] Erciyes Univ, Fac Sci, Dept Chem, TR-38039 Kayseri, Turkey

[3] Natl Res Ctr, Water Pollut Res Dept, Cairo, Egypt

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2012年 / 96卷

关键词：

Molecular modeling; FTIR; Water hyacinth; Metals and kinetic models; HEAVY-METAL; WASTE-WATER; ADSORPTION; SORPTION; BIOSORPTION; CADMIUM; BIOMASS; IONS; LEAD; EQUILIBRIUM;

D O I：

10.1016/j.saa.2012.05.039

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Possible usages of dried water hyacinth as biosorbent for metal ions were investigated. A model describing the plant is presented on density functional theory DFT and verified experimentally with FTIR. The model shows that water hyacinth is a mixture of cellulose and lignin. Dried shoot and root were found as good sorbent for Cd(II) and Pb(II) at optimum dosage of 5.0 g/l and pH 5.0; equilibrium time was attained within 30-60 min. The removal using root and shoot were nearly equal and reached more than 75% for Cd and more than 90% for Pb. Finally the second-order kinetics was the applicable model. Hydrogen bonds of reactive functional groups like COOH play the key role in the removal process. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：413 / 420

页数：8

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